DR. JOHN STEPHEN THURLOW M.D.
NPI 1740441237
Internal Medicine - Nephrology in Bethesda, MD
About Dr. John Stephen Thurlow M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN STEPHEN THURLOW M.D. (NPI 1740441237) is an individual nephrology provider in Bethesda, Maryland, licensed in Wisconsin (53790-20) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, is affiliated with St Nicholas Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. John Stephen Thurlow M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show John Thurlow reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sheboygan, WI 53081
- Reassigned Medicare billing, Wisconsin enrollment
- 673 clinicians in this Medicare group
Sturgeon Bay, WI 54235
- Reassigned Medicare billing, Wisconsin enrollment
- 216 clinicians in this Medicare group
Green Bay, WI 54304
- Reassigned Medicare billing, Wisconsin enrollment
- 742 clinicians in this Medicare group
Neenah, WI 54956
- Reassigned Medicare billing, Wisconsin enrollment
- 16 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 10
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Nicholas Hospital
Acute Care Hospitals · Sheboygan, WISt Vincent Hospital
Acute Care Hospitals · Green Bay, WISt Mary's Hospital Medical Center
Acute Care Hospitals · Green Bay, WIThedacare Regional Medical Center - Appleton Inc
Acute Care Hospitals · Appleton, WIDoor County Medical Center
Critical Access Hospitals · Sturgeon Bay, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20889 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BETHESDA, MD 20889
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Thurlow's NPI number?
The NPI number for John Thurlow is 1740441237. It was assigned to this individual provider in the NPPES registry on June 18, 2008.
Where is John Thurlow located?
John Thurlow practices at 4494 N Palmer Rd, Bethesda, MD 20889. The listed phone number is (301) 295-4331.
What is John Thurlow's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is John Thurlow enrolled in Medicare?
Yes. John Thurlow is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Thurlow's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Thurlow reassigns Medicare benefits to 4 organizations: St Nicholas Hospital-Sisters Of The Third Order Of St Francis (Sheboygan, WI), St. Clare Memorial Hospital, Inc (Sturgeon Bay, WI), St Vincent Hospital-Hospital Sisters-Third Order Of St Francis (Green Bay, WI) and Fox Valley Nephrology Partners S C (Neenah, WI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Thurlow's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Thurlow accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Blue Cross and Blue Shield of Texas, CareSource (Common Ground Healthcare) and Dean Health Plan and 4 other insurers list John Thurlow as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Thurlow affiliated with any hospitals?
According to CMS data, John Thurlow is affiliated with St Nicholas Hospital, St Vincent Hospital, St Mary's Hospital Medical Center, Thedacare Regional Medical Center - Appleton Inc and Door County Medical Center.
When was this NPI record last updated?
The NPPES record for John Thurlow was last updated on January 17, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. John Stephen Thurlow, M.D. · NPI 1740441237
Nephrology physician in Bethesda, Maryland. Individual provider, active in the CMS NPPES registry since June 18, 2008.
## Identity
- **NPI:** 1740441237 (Entity type: Individual)
- **Enumerated:** June 18, 2008
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** 53790-20 (Wisconsin)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4494 N PALMER RD, Bethesda, MD 20889-4501
- **Phone:** (301) 295-4331
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): St Nicholas Hospital-Sisters Of The Third Order Of St Francis (NPI 1275943243, Sheboygan, WI); St. Clare Memorial Hospital, Inc (NPI 1447618152, Sturgeon Bay, WI); St Vincent Hospital-Hospital Sisters-Third Order Of St Francis (NPI 1285613638, Green Bay, WI); Fox Valley Nephrology Partners S C (NPI 1891713756, Neenah, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** January 17, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1740441237) · Data from the CMS NPPES public registry.